SRNE SPI-8K-UP / SPI-10K-UP 48V Split Phase Off-Grid Hybrid Inverter User Manual

1. Safety Information

Please read all instructions and warnings in this manual carefully before installation and operation. Failure to follow these instructions may result in electric shock, fire, or severe injury.

• Installation must be performed by qualified personnel.
• Ensure all wiring complies with local and national electrical codes.
• Do not attempt to repair the inverter yourself. Contact qualified service personnel.
• Disconnect all power sources (PV, battery, utility) before performing any maintenance or wiring.
• The inverter contains high voltage and current. Exercise extreme caution.
• Ensure proper ventilation to prevent overheating.

2. Product Overview

The SRNE SPI Series is a 48V split-phase off-grid hybrid inverter designed for solar power systems. It features dual MPPT trackers for optimized solar energy harvesting and supports both Li-ion and Lead-acid batteries. This inverter can operate in off-grid or hybrid modes and supports parallel connection of up to 6 units.

Key Features:

• Advanced MPPT technology with up to 99.9% efficiency.
• High-quality pure sine wave AC power output.
• Supports 1-6 units in parallel connection.
• Comprehensive hardware and software security.
• Up to 200A charging current.
• Supports Li-ion battery BMS communication.
• Industrial design with a modern aesthetic look.
• Time-slot function to save cost with peak-valley electricity rates.

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3. Setup

3.1 Unboxing

Carefully open the packaging and inspect the contents. Ensure all components are present and undamaged.

Included Components:

• SRNE SPI-8K-UP or SPI-10K-UP Hybrid Inverter
• User Manual
• Mounting accessories (screws, brackets)
• Communication cables (USB, RS485/CAN)

3.2 Installation Location

• Mount the inverter in a well-ventilated area, away from direct sunlight, heat sources, and flammable materials.
• Ensure the mounting surface is strong enough to support the inverter's weight (27kg).
• Maintain adequate clearance around the inverter for proper airflow.
• The protection degree is IP20, meaning it is suitable for indoor use only.

3.3 Wiring Connections

Refer to the system architecture diagram below for a visual guide to connections. All wiring should be done by a qualified electrician.

1. PV Input (PV1, PV2): Connect your solar PV panels to the designated PV input terminals. Ensure correct polarity and that the PV array voltage and current are within the inverter's specifications (Max. Open Circuit Voltage 500Vdc+500Vdc, MPPT Voltage Range 125-425Vdc).
2. Battery Connection (BAT+, BAT-): Connect the battery bank to the battery terminals. Observe correct polarity. The inverter supports 48Vdc Li-ion and Lead-acid batteries.
3. AC Input (AC IN): Connect the utility grid or generator AC power to the AC IN terminals. The input voltage range is 90-140Vac.
4. AC Output (AC OUT): Connect your home appliances or load center to the AC OUT terminals. The rated output voltage is 120Vac (single-phase) / 240Vac (split-phase).
5. Parallel Connection: If using multiple inverters in parallel (up to 6 units), connect them according to the parallel connection instructions in the detailed user manual.
6. Communication Ports (RS485, CAN, USB, Dry Contact): Connect communication cables for monitoring and control. Optional Wi-Fi/GPRS modules are available for remote monitoring.

Important: Always ensure all connections are secure and properly insulated before applying power.

4. Operating Instructions

4.1 Initial Startup

1. After all connections are made and verified, switch on the battery breaker.
2. Switch on the PV array breaker.
3. Switch on the AC input breaker (utility/generator).
4. Finally, switch on the inverter's main power switch (if present).
5. The inverter will perform a self-test and then begin operation. Monitor the LCD display for status and error messages.

4.2 LCD Display and Buttons

The inverter features an LCD display and control buttons for monitoring system status, configuring settings, and viewing operational data. Refer to the detailed user manual for a complete guide to the menu structure and parameter settings.

4.3 Operating Modes

The inverter supports various operating modes, including off-grid (default) and hybrid modes. These modes dictate how the inverter prioritizes power sources (PV, battery, utility) to supply the load and charge the battery. Configuration of these modes is done via the LCD display or communication software.

4.4 Parallel Operation

For increased power output or redundancy, up to 6 units of the SRNE SPI Series inverters can be connected in parallel. Specific wiring and configuration steps are required for parallel operation, detailed in the comprehensive user manual.

5. Maintenance

Regular maintenance ensures the longevity and optimal performance of your inverter.

• Cleaning: Periodically clean the inverter's exterior and ventilation openings to prevent dust accumulation. The inverter uses an internal fan for cooling, so ensure air intake and exhaust are unobstructed.
• Connections Check: Annually inspect all electrical connections for tightness and signs of corrosion.
• Battery Inspection: Follow the manufacturer's maintenance guidelines for your specific battery type.
• Firmware Updates: Check the SRNE official website for any available firmware updates to improve performance or add new features.

Always disconnect all power sources before performing any cleaning or inspection.

6. Troubleshooting

If you encounter issues with your inverter, refer to the following general troubleshooting steps. For detailed error codes and solutions, consult the full user manual.

• No Power Output: Check all input power sources (PV, battery, utility) and ensure they are connected and active. Verify the inverter's main switch is ON.
• Inverter Overheating: Ensure the inverter is in a well-ventilated area and that its cooling fins and fan are not obstructed. Reduce the load if necessary.
• Battery Not Charging: Check PV input voltage and current. Verify battery connections and health. Ensure charging parameters are correctly set.
• Error Codes on Display: Note down the specific error code and consult the user manual's troubleshooting section for detailed explanations and corrective actions.

If the problem persists after attempting these steps, contact SRNE customer support or a qualified technician.

7. Specifications

The following table outlines the technical specifications for the SRNE SPI-8K-UP and SPI-10K-UP models.

8. User Tips

While no specific user tips were provided, here are some general recommendations for optimizing your inverter's performance:

• Monitor Performance: Regularly check the inverter's display or connected monitoring system to ensure optimal power generation and consumption.
• Battery Management: Proper battery care is crucial for system longevity. Avoid deep discharges and ensure batteries are kept within their recommended temperature range.
• Load Management: Be mindful of your power consumption, especially during periods of low solar irradiance or battery charge, to prevent overloading the inverter.
• Ventilation: Ensure the inverter's ventilation areas remain clear of dust and debris to maintain efficient cooling.

9. Warranty and Support

The SRNE SPI Series Hybrid Inverter comes with an 18-month warranty from the date of purchase. Please retain your proof of purchase for warranty claims.

For technical support, service, or warranty inquiries, please contact your local dealer or SRNE customer service. Do not attempt to open or repair the inverter yourself, as this may void your warranty and pose safety risks.